Granted Patent
Utility
US 6,624,479 · App. 09/837,823
Semiconductor device having a protective circuit
Inventor:
Koichi Sawahata
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Apr 18, 2001
Inventor
Koichi Sawahata
Assignee (at issue)
NEC Electronics Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.